Question

Which one of the following is correct in the case of increasing order of energy of an electron?

• A. K , L, M, N, O
• B. O, N, M, L, K
• C. K, L, O, N, M
• D. K, L, N, M, O

Answer 1

The correct option is A K , L, M, N, O

Electrons in each shell have been associated with a definate amount of energy. Electrons in higher shells have more energy than those nearer to the nucleus.

The shell which is nearer to the nucleus is K, then L, M, N and O.